In the exercises that follow you will practice using variables instead of the values they represent.
As you work, notice how this new approach allows you to concentrate on the concepts. The equations look as they do in textbooks and the calculations, even the unit conversions, are handled by Mathcad. The end result is that you can focus on understanding your material and still have the energy left over to put your answer in perspective.
In addition to practice solving problems, we will show you a technique for solving problems and double-checking your answer, called dimensional analysis.